Which statements are true?
Select each correct answer.

All parallelograms are quadrilaterals.

All rectangles are squares.

All rhombuses are rectangles.

All squares are rhombuses.

Suppose that the price p, in dollars, and the number of sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 pxequals56. suppose also that p and x are both functions of time, measured in days. find the rate at which x is changing when xequals2, pequals6, and startfraction dp over dt endfraction equals1.5.

Plzzz answer both questions and i will give you 100 points

The perimeter of a quarter circle is 14.28 miles. what is the quarter circle's radius?